Climate · Climate litigation · Coal mining · Australia
Australia's High Court rules Mount Pleasant coal mine expansion approval invalid over climate emissions
IllustrationThe expansion approval is invalid after the High Court ruling, and MACH Energy says it will look at every option to keep the mine running.
Australia's High Court has ruled that the approval of the Mount Pleasant coal mine expansion in New South Wales was invalid. A majority of judges found that planners should have considered conditions to limit the project's greenhouse gas emissions, including from coal burned overseas. MACH Energy accepted the decision but says it will keep pursuing options for the mine.
Latest update
The High Court ruled the approval of the Mount Pleasant coal mine expansion invalid.
What changed in this version
Version 1, : Story created.
Key facts
- Australia's High Court ruled 3-2 against MACH Energy, dismissing its appeal and leaving the approval of the Mount Pleasant coal mine expansion in New South Wales invalid. [1] [2]
- The majority found that the state's Independent Planning Commission should have considered conditions to keep the project's greenhouse gas emissions as low as practicable, including from coal burned abroad, and did not. [1] [2]
- The expansion would have kept the open-cut mine in the Hunter Valley running until 2048 and roughly doubled its yearly coal output. [1] [2]
Timeline
- Australia's High Court ruled 3-2 against MACH Energy, dismissing its appeal and leaving the approval of the Mount Pleasant coal mine expansion in New South Wales invalid. [1] [2]
- The majority found that the state's Independent Planning Commission should have considered conditions to keep the project's greenhouse gas emissions as low as practicable, including from coal burned abroad, and did not. [1] [2]
- MACH Energy said it was disappointed but accepted the decision, and that it would keep pursuing every option to keep the Mount Pleasant mine operating. [1] [2]
What is confirmed
- The case was brought by a local community group led by two retired science teachers, Wendy Wales and Tony Lonergan. [1] [2]
- MACH Energy said it was disappointed but accepted the decision, and that it would keep pursuing every option to keep the Mount Pleasant mine operating. [1] [2]
What remains unconfirmed
- Almost all of the expansion's projected emissions would come from burning the exported coal, according to the Guardian. [1]
- Campaigners say this was the first climate case to reach Australia's highest court and that it sets a binding precedent for how fossil fuel projects are assessed. [2] [1]
- A Greens MP in New South Wales says the ruling could cause legal problems for the recently approved Hunter Valley Operations mine extension. [1]
Why it matters
Australia is one of the world's largest coal exporters. If planners must now weigh emissions from exported coal, other mine approvals in New South Wales could face the same test.
What happens next
No upcoming events are known.
Questions
What did the High Court decide?
By a 3-2 majority it dismissed MACH Energy's appeal, leaving the approval of the Mount Pleasant expansion invalid.
Why was the approval invalid?
The majority found the Independent Planning Commission did not consider conditions to keep the project's emissions, including from coal burned abroad, as low as practicable.
Does the mine close?
The ruling concerns the expansion. MACH Energy says it will keep pursuing options to keep the mine operating.
Sources
- Hunter Valley community group wins landmark high court climate change case over Mount Pleasant coalmine, The GuardianNews organizationPublished 7 October 2026. Accessed 7 October 2026.
- Australia top court rules against coal mine expansion, citing climate harm, Al JazeeraNews organizationAccessed 7 October 2026.
People, places and organizations
- organization
- High Court of Australia
- organization
- MACH Energy
- location
- Mount Pleasant coal mine
- organization
- NSW Independent Planning Commission
- location
- New South Wales